Razor-blade-sharpening machine.



S. KANNER.

RAZOR BLADE SHARPENING MACHLNE.

APPLICATION FILED AUG.16,1917

1,? 1,71 5. Patented July 9,1918.;

4 2 SHEETS-SHEET 2. J9

e irrigare.

suur. KANNER, 'or BnoNx, Nnw roux, AssIGNon :ro THE ROYAL srnorrnn oo.,

mc., or NEW YORK, N. Y., a CORPORATION 0F NEW YORK.

nAzonLBLaDE-SHABPENING MACHINE.

Specification of Letters Patent.

To al whom it may concern:

. V Be it known that I, SAMUEL KANNER, a -citizen of the United States,anda resident of Bronx, in the county of Bronx and State of New York,have invented 'certain new and useful Improvementsin Razor-Blade-Sha'rpening Machines, of whichthe following is a specification.

" rlhe invention pertains more particularly.

to machines for sharpening thin razor blades, of the type used in safetyrazors, and the purpose ofthe invention is to pro; vide an inexpensivemachine by means of which a person .may conveniently sharpen both edgesof a safety razor blade having two cutting edges or both `sides of arazor bladeof a different type having only one cutting edge and asti'ening member ap'- plied to its other edge.

The. machine of my invention' comprises 'a box-like frame containing twosharpening rollers connected together by gearing and lone of which hasconnected with it a driving crank, anda pivoted frame secured to theends of the said box-like frame and having means by which a razor blademay be clamped against a transverse member thereof and by means of saidmember, under pressure applied to said -pivoted, frame, manually presseddownwardly against'the sharpening rollers. The pivoted frame carryingthe blade clamping members has a normal vspring tension.upwardly in a.di-

' rection from the sharpening rollers, and

ers being maintained so long as said frame4 when said frame is in itsupper position the razor blade may be applied to said clamping members,and thereafter said frame may be pressed downwardly to carry the edgesof the blade against the sharpening rollers, the engagement of the bladewith said rollis held in its lower position.

The machine of my invention also comprises means vby which the bladeholding members may be automatically reversed in position, so that theside of the blade which faced outwardly maybe turned to face downwardlypreparatory to the blade .being again subjected to the action of thesharpening rollers.` The reversal of the blade takes place during thedownward movement of the pivoted frame' carrying the blade holding orclamping members,

so that on each downward movement of said pivoted frame the side of theblade not on the 'next previous movement placed against the sharpeningrollers, may Abe caused to engage said rollers.

rlhe sharpening rollers may be variously constructed, but I preferablymake the sharpening rollers of wood and provide them with a leatherfacing, which leather I shall wind in the form of spiral strips on thesharpening rollers so that the leather may in its action on the bladesproduce the eect of an edge movement thereaga-inst, or, to such extentas may be possible, the eEect of the heel-to-toe `movement in theordinary stropping of razor blades.

My present invention comprises certain improvements, hereinafterspecified, oli the machine for sharpeningy razor blades made the subjectof my pending applicationv for lelters- Patent, No. 46,254 filed August19,

The invention will be fully understood from the detailed vdescription.hereinafter presented, reference being lhad to the accompanyingdrawings, in which:

Figure 1 is a top view 'of 'a razor blade sharpening machine constructedin accordance with my invention, a blade being shown in position on theclamping members carried by the pivoted frame and said frame being shownin its depressed position holding the blade against the sharpeningrollers;

Fig. 2 is a side elevation ofthe same takenL from the left hand side ofFig. 1 and illus- E trating the pivoted frame carrying the 'blade'clamping members in its upper posithe reversal of the blade on eachdownward movement of the pivoted frame;

Fig. 7 is a front elevation of the machine with the pivotedv framecarrying the'blade resented .any e, rais. l'

clamping members in its lower position,

Fig. 7 being a view taken from the right hand side of Fig.` 3;

Fig. 8 is a top view of the blade clamping members, portions of thesupporting fram therefor being shown in section;

Fig. 9 is a longitudinal section through the same taken on the dottedline 9-#9 of Fig. 8, a blade having two cutting edges being shown inFigs. 8 and 9;

Fig. 10 is a view corresponding with Fig. 8 but illustrating a modifiedform of clamp intended for holding a safety razor blade having only onecutting edgeg' Fig. 11 is a corresponding view, of the same with thedetachable member of the clamp removed from the safety razor blade andshown in bottom elevation as having been turned from 0H the razor bladeand the base member upon whichfthe blade is held;

Fig. 12 is a longitudinal section through the same taken' on the dottedline 12-12 of Fig. 10, and l Fig. 13 is a transverse section through thesame, on a reduced scale, taken on the dotted line 13-13 of Fig. 10.

In the drawings, 10 designates a box-like frame having an inwardlyextending flange 11 along its upper edges and near its sides providedwith inner vertical partitions 12, 13 (Figs. 4 and 5). rlhe partitions12, 13 serve as bearings for the shafts 14, 15 of the parallelsharpening rollers 16, 17. The rollers 16, 17 are properly spaced apart,and theirl shafts at one end are connected by gear wheels 18, 19, 20,21, the gear wheels 19, 20 being idlers and transmitting the motion ofthe gear wheel 18 to the gear wheel 21.,The gear wheel 18 is on theshaft of the roller 16, and on one end of said shaft,.which,projectsthrough the end of the `side Vof the box 10, is

provided a driving crank 22 of any suitable construction. Within thechamber formed between the partition 13 and adjacent side of the box 10the gear wheels 18, 19;, 20 and 21 are housed, and these gear wheels areactuated by the erank 22 to rotate the sharpen'ing rollers in reversedirection so that the surfaces of the rollers may be constantlycarriedin a direction away from the edges of t-he razor blade. y

The sharpening rollers are, except at their extreme upper portions,housed within the box 10, and these rollers may be variouslyconstructed. I illustrate the preferred construction of sharpeningrollers, and in this construction the body of the rollers is made ofwood and spirally grooved, and within the groove of each roller issecured, by gluing or otherwise, a spirally wound strip of leather 25,the outer portions of said strips being set outwardly from the body ofthe rollers, as shown in Fig. 1. The spirals of the rollers 16, 17 arereverse to each other Saura both edges of the blade 2e may becorrespondingly treated by the leather strips The spiral winding of thestrips of leather 25 has, I believe, a better ed'ect on the edges of theblade than would smooth.

surfaced rollers or rollers covered by a continuous piece of leather.The spiral strips, when the rollers are in motion, have what may be saidto bea traveling e'ect or action onl the edges of the blade in imitationof the heel-to-toe movement ordinarily applied to.

razor blades in hand stropping. 'l do not desire, however, to limit myinvention, in every instance, to the employment of the spirally woundsharpening rollers, since plain covered rollers may beused with goodedectas substitutes for the spirally wound rollers. v l

l secure on pins or pivots 27 at opposite sides and near one end of thebox 10 ablade carrying frame numbered, as a whole, 28 and comprising twoend members 29, 30 and a connecting bar or member 31, said parts 29, 30,31 being preferably 'formed in one integral piece of sheet metal. Theframe 28 carries the means for clamping the blade 26, or other form ofblade, when the latter 'is to be moved to and held against the rollers16, 17, and said clamping means comprises' a rotary bar 32 whose endportions are made tubular, as at 33, 34, and mounted in bearing openingsformed in the sides 29, 30of the frame 28. The tubular portion 33 of thebar 32 has rigidly secured within it a pin 35 which is undercut at itsinner end, as at 36, and on its outer end carries a traveler 37. Thetubular portion 34 is internally thread ed and receives a pointed screw38 whose head 39 is exposed beyond the side 30 of the frame 28.' The bar32 may be formed with upwardly projecting studs 40 when the machine isto be employed for shar ening safety razors of the Gillette type, suc asis indicated by the blade 26. The bar 32 may be considered as the lowerclamping member to receive the blade 26, and upon said blade and bar 32is detachably applied an upper clamping member 41 having a fingerpiece42 and downwardly deflected ends 43 v which are adapted to lie below theinclined portion of the inner end of the pin 35 and below the point ofthe screw 38, as shown in Fig, 9. The screw 38 will be moved outwardlywhen the blade 26 is to be applied to or removed from the bar 32. lWhenthe screw 38 is screwed outwardly the bar 41 may be easily lifted fromthe bar 32, and thereafter when a bladeA 26 is applied upon the bar 32,the bar 41 maybe restored to position and fastened b v the inwardmovement of the screw 38 against the adjacent end 43 of the bar 41. Thescrew 38 and undercutend 43 of the pin 35 operate, in conection with theinclined ends 43 of the bar 41, to wedge said bar 41 downwardly againstthe razor blade, thereby holding the same firmlyin position on the bar32. rlhe bar 41 is :formed with openings to receive the upper ends ofthe studs 40.

One arm of the frame 28 is provided with a shoulder 44 to engage a stop45, stamped out from the side of the box 10, when said frame 28 hasreached its upper position shown in Fig. 2, said shoulder and stopserving to arrest the movement of said frame. rlhe frame 28 may be movedto its upper position automatically, when released from the pressure ofthe hand, by means of a spring 46 or a spring 47 or both springs.

VThe s ring 46 is wrapped upon one of the pins 2 as shown in Fig. 2, andhas one end engaged with the arm 29 of the frame 28 and its other endengaged in a hole in the side of the box 10, and said spring is under anormal tension tending to throw the frame 28 to its upper position. The.spring 47 is coiled upon a transverse rod 48 which is pivotally mountedin the partitions 12, 13, as

shown in Fig. 5, and one end of said springl is connected with saidrodby being passed into a hole therein, and the other end of the spring47 is placed under a lip 149 extending inwardly from the partition 13.The spring 47 is always under tension, and its power to turnthe frame 28upwardly is transmitted through the rod 48 and a frame 49 which engagesthe traveler 37 and has a tubular portion 50 up through which anupwardly bent outer end 51 of the rod 48 is extended, said end 51operating as .a crank armA acting against the frame 49 and, lunder theaction of the spring 47, pressing against the trave'ler 37 in adirection to move the frame 28 upwardly on its pivots 27. The frame49-is formed of sheet metal and has a tubular lower portion 52, theaforesaid tubular portion 50 which is at the outer vertical edge of saidframe, and aplate member 53 which extends inwardly from the tubularportion 50 and serves as a pathway or track for the traveler 37. Theplate member. 53 extends upwardly above the tubular portion 50 of theframe 49 and will be shaped in accordance with the shape of the traveler37 whatever the shape of the traveler may be. In the present instancethe traveler 37 is in the form of a bar of somewhat elongated form andhaving oppositely curved end portions 54, 55 (Fig. 3). In theemploymentl of this form of traveler the upper portion of the platemember 53 will be given substantially the outline illustrated in Figs. 2and 3, said plate member then comprising the right-angular arms 56, 57.the arm 57 being a plain straight arm, and the arm 56 being deflected tothe right, looking at Fig. 2. from the axial line of the tubular member50 and that portion of the plate below the upper end of said portion 50.The arm 56 has an outward curve 58 adjacent to the upper end of thetubular member 50, and near its upper portion said arm 56 has an inwardbend 59 forming a ridge against which the traveler 37 passes and whichridge serves, when the traveler 37 is in its upper position, to pressthe upper end of said traveler toward the right, looking at Fig. 2, sothat the traveler does not stand exactly in the same parallel plane withthat portion of the arm 56 which is between the curved portion 58 andinwardly bent portion 59. The spring 47 acting through the rod 48 andframe 49 may be utilized, in the absence of the spring 46, for turningthe frame 28 to its upper position and cushioning said frame 28 when thesame is pressed to its lower -position by the thumb or hand of the userof the machine for pressing the razor blade against the sharpeningrollers, the spring serving to yieldingly press the blade upwardly fromthe rollers and the hand cushioning the downward pressure of the bladeagainst the rollers, the final effect being to hold the blade againstthe rollers not harshly but with a balancing action tending to greateiiciency in the sharpening of the blade. When both springs 46, 47 areemployed neither spring need be of very heavy -wire. 1n any eventl aspring 47 should be employed on the rod 48 so that it may keep the platemember 53 of the frame 49 with suiicient firmness against the traveler37 to insure the purposes of said traveler. The traveler 37 ofappropriate form and the plate member 53 of suitable coperating form areemployed to insure a reversal of the blade holder on each downwardmovement of the pivoted frame 28.

In the construction shown, when the frame 28 is turned downwardly tocarry the blade 26 against the sharpening rollers, thel traveler 37 willmove down the arm 56 of the frame 49 and its lower end will engage theshoulder formed at the lower edge of the groove 58, and thereupon thecontinued pressure of the hand against the frame 28 to move said frameto its lower position will result in the traveler 37 by the resistanceof a portion of the frame 49 at the lower edge of the groove 58, beingcompelled to turn angularly so that what appears to be the lower side ofthe traveler 37. looking at Fig. 2, will engage the fiat portion or web53 of the frame 49 and ride down the same, this turning over of thetraveler 37 being communicated to the blade clamping members and theblade so that what may be said to be the right hand face of the blade26, looking at Fig. 2, becomes the lower face of the blade when saidblade reaches the sharpening rollers. lVhile the frame 28 is held by thehand of the user in its lower position, said user will, by means of thecrank 22, rotate the sharpening rollers against which the blade is thenheld. After the crank 22 has been operated to a sucient extent thepressure of the hand on the frame 28 is relaxed and said frame isallowed to turn upwardly to the position illustrated in Fig.

" 2, the spring 47, or the s rings 47, 46 combined, compelling said rameto turn upwardly.

28. The traveler 37 is caused tofturn over on each downstroke of the,frame 28 so as to reverse the blade 26 for presentation to thesharpening rollers but said traveler 37 does not become reversed on theupstrokeA of the frame 28 but simply rides upwardly to the position inwhich it is shown in Fig.

2. The traveler 37 and frame 49 constitute means for automaticallyreversing the razor blade during the movement of the frame 28, so thaton one downstroke movement of the frame 28 one side of the razor bladeis presented to the sharpening rollers and that on the next succeedingvdownward movement of the frame 28 the other side of the razor bladewill be presented to said rollers.

In m aforesaid application for Letters PatentY ed August 19, 1915, therazor blade was so presented to the sharpening rollers that first oneside of said blade and then the other side of the blade was sharpened,

but in the machine of that application vthe reversal of the bladeholding means was performed by hand when the pivoted frame carrying theblade clamping members was' in its upper position.

In the present instance the reversal of the blade is accomplishedautomatically, the

means reversing the blade and the clamping members holding the samebeing actuated. from theA pivoted manually voperated frame 28. Iillustrate-the traveler 37 and frame 49 as one convenient means foreffecting the reversal of the blade during the movement of the frame'28,but I desire it to be understood that I do not limit the invention tothe employment of the special traveler 37 and special frame 49illustrated, since I am aware of other forms of devices which may bemade use of to insure, a reversal of the blade during the movement ofthe frame 28.

In'Figs. 10 to 13 inclusive I illustrate a modified construction 'of thetwo clamping members for holding a blade to be sharpened, and themodification resides mainly in constructing the clamping members toreceive between them a well-known type of blade 90 having one cuttingedge and a backing 91 at its other edge. The lower clamping member 92has tubular end portions 93 corresponding with the tubular portions 33,34 of Fig 8 and respectively lreceiving the undercut pin 35 and securingscrew 38. The lower clamping member 92 is recessed to receive thebacking 91 of the blade and the upper clamping member, which I number193, is correspondingly recessed to it upon said backing 91. rlhe endsof the clamping member 193 diverge downwardly, as at 94, correspondinglywith the ends 43 of the clamping member shown in Fig. 9.

When I desire either to remove a blade from or apply a blade to theclamping members of the machine, I allow the springs to turn the frame28 to its upper position,l

shown in Fig. 2, and then by means'o the head 39 on the screw 38 I givethe clamping members an one-quarter turn so as to` throw them'intoconvenient position to receive or release .a blade, and when I' thusgive the clamping members an one-quarter turn the traveler 37 is carriedagainst, the member .57 of the frame 49, the end of the traveler 37which is uppermost, looking at Fig. 2, being by the action justdescribed, caused to ride down the member 57, while the upper fiat sideof the traveler 37 is moving to and against said member 57, the traveler37 and member 57 then serving as stops to hold the clamping membersstationary, while a blade is being applied to or removed therefrom. Whenit is again desired to employ the machine I give the clamping members areverse quarter turn to restore them to their normal position, and indoing this the end of the travel then at the angle between the members56, 57 of the frame 49 will touch against the shoulder aorded by theinward bend 59 with the result that the turnin over action of thetraveler 37 will be faci itated. y

The machine of my invention is small and comparatively inexpensive, andit is designed to, when in use, be held in the left hand, theA fingersof the hand being below the box 10 and the thumb upon the member 31 ofthe frame 28, and when the device or machine is thus held with a bladein'position against the rollers, the crank 22 will be rotated by theright hand, the pressure of the blade against the corresponding rollersbeing controlled manually by pressure of the thumb against said member31 or pressure of the thumb and fingers against said member 31 and thebottom of the box, respectively. The machine of my invention may beconveniently carried in a Isuit-case or small traveling bag and used asoccasion may require on a car or elsewhere, and one of its points ofmerit is that the relation of the blade to the rollers is sensitivelycontrolled by the human hand opposing the force of a spring. A

When a blade having two cutting edges is treated, said blade will engageboth sharpening rollers at one time, while when a blade having only onecutting edge is treated, one side of one edge will first engage one ofthe rollers and then the other side of the same edge will engage theother roller, said blade engaging the rolls alternately.

What I claim as my invention and desire to secure by Letters Patent, is:

1. A razor-blade Sharpener of the character described comprising anopen-top box, a pair of cylindrical sharpening rolls therein exposed atthe open top of said box and geared together to have reverse rotarymotion, a frame connected with and extending above said box and movabletoward and from said rolls, a blade-holder rotatably mounted in saidframe and movable therewith and adapted to detachably hold a blade to besharpened, a spring acting to move said frame to its upper positionabove and from said rolls, and blade reversing means engaging the bladeholder for automatically; on the movement of said frame, reversing saidblade-holder and blade so that the opposite side of the edge of theblade may be presented for sharpening, said Sharpener as a whole beingadapted to be held in one hand between the fingers and thumb thereof andhaving means by which with the other lhand the said rolls may berotated.

2. A razor-blade Sharpener of thecharacter described comprising anopen-top box, a pair of cylindrical sharpening rolls therein exposed atthe open top of said box` and geared together to have reverse rotarymotion, a frame pivotally connected with and extending above said boxand vmovable toward and from said rolls, a blade-holder rotatablymounted in said frame and movable therewith and adapted to detachablyhold a blade to be sharpened, a spring acting to move said frame to itsupper position above and from said rolls, and blade reversing meansengaging the blade holder on the downward movement of said frame, forautomatically reversing said blade-holder and blade so that the oppositeside of the edge of the blade may be presented for sharpening, saidSharpener as a whole being adapted to be held in one hand between thelingers and thumb thereof and having means by which with the other handthe said rolls may be rotated. l

3. A razor-blade Sharpener of the character described comprising anopen-top box, a pair of cylindrical sharpening rolls therem exposed atthe open top of said box and geared together to have reverse rotarymotion, a frame pivotally mounted on said box and near one side thereofand comprising side arms and a connecting hand piece whereby the freeend of the frame may be manually pressed toward said rolls, abladeholder rotatably mounted in said frame and movable therewith andadapted to detachably'hold a blade to be pressed against said rolls andsharpened thereby, a spring acting to move said framel to itsupperposition above and from said rolls, and blade reversing meansengaging the blade holder for, on the movement of said frame,automatically reversing said blade-holder and blade so that the oppositeside of the edge of the blade may be presented for sharpening, saidSharpener as a whole being adapted to be held in one hand'between thefingers and thumb thereof and havin means by which with 4the other handfille' said rolls may be' rotated.

4. A razor-blade Sharpener of the character described comprising anopen-top box,

i a pair of cylindrical sharpening rolls therein exposed at the open topof said box and geared together to have reverse rotary motion, a framepivotally mounted on said box and near one side thereof and comprisingside arms and a connecting hand-piece whereby the free end of the framemay be manually pressed toward said rolls, a bladeholder rotatablymounted in said frame and movable therewith and adapted to detachablyhold a blade to be pressed against said rolls and sharpened thereby, aspring acting to move said frame to its upper position above and fromsaid rolls, and blade 'reversing means engaging the blade holder on thedownward movement of said frame for automatically reversing saidblade-holder and blade so that the opposite side of the edge ofthe blademay be presented for sharpening, said Sharpener as a whole being adaptedto be held in one hand between the fingers and thumb thereof and havingmeans by which with the other handl the said rolls may be rotated, andsaid means for rotating said rolls being a crank disposed at one side ofthe box and connected with one of said rolls, and said means forreversing the blade-holder and blade being disposed at the other side ofsaid box.

5. A razor-blade Sharpener of the character described comprising anopen-top box, a pair of cylindrical sharpening rolls therein exposed atthe open top of said box and geared together to have reverse rotarymotion, a frame connected with and extending above said box and movabletoward and from said rolls, a blade-holder rotatably mounted in saidframe and movable therewith and adapted to detachably hold a blade to besharpened, a spring acting to move said frame to its upper positionabove and from said rolls and blade reversing means engaging the bladeholder for autoinatically reversing said' blade-holder and blade sothatV the opposite side of the edge of the blade may be presented forsharpening, said .means comprisingy an -actuating traveler on the endof. the blade' holder and a plate connected with said box and engagingthe traveler and adapted on the movement of said frame to. reverse thetraveler and thereby the blade holder and blade.

6. A razor-blade Sharpener of the character described comprising anopen-top box, a pair of cylindrical sharpening rolls therein exposed atthe open top of said box and geared together to have reverse rotary motion, a frame pivotally mountedon said box vand near one side thereofand comprising side arms, and a connectin hand-piece whereby the freeend of the rame may be manually pressed toward said rolls, a bladeholderrotatably mounted in'said frame and movable therewith and adapted todetachably hold a blade to be pressed against saidv rolls/and sharpenedthereby,a spring acting `to 'move saidv frame to its upper positionabove and from said rolls, and blade reversing means engaging the bladeholder for, on the movement of said frame, automatically reversing saidblade-holder and blade so that the opposite side of the edge ofthe blademay be presented for sharpening, said means comprising an actuatingtraveler on the end of the blade holder and a plate connected withsaidbox and engaging the traveler and adapted on the movement of said frameto reverse the traveler and thereby the bladeholder and blade.

7 A razor-blade Sharpener of the character described comprising anopen-top box, a pair of cylindrical sharpening rolls therein exposed atthe open top of said box and geared together to have reverse rotarymotion, a frame pivotally mounted on said box and near one side thereofand comprising side arms and a connecting hand-piece whereby the freeend of the frame may be manually pressed toward said rolls,'abladeholder rotatably mounted in said frame and movable therewith andadapted toY detachhold a blade to be pressed against said and sharpenedthereby, a spring acting to move said frame 'to its upper position aboveand from said rolls, andvbladereversing means engaging the blade holderfor, on the movement of said frame,'reversing the said blade-holder andblade and comprlsing -a traveler on the end of the blade-holder and apivoted sprin -pressed plate engaging said traveler and a ording a tracktherefor and adapted on the movement of said frame toreverse thetraveler and thereby the bladeholder and blade.

8. A razor-blade Sharpener of the character described comprising anopen-top box, a

movable therewith and adapted to detach- 7.5

ably hold a blade to be pressed against said rolls and-sharpenedthereby, aspring acting .to movesa'id frame to its upper position aboveand from said rolls, and blade reversing means engaging'the blade holderfor, on

the movement of said frame, reversing the` said blade-holder and bladeand comprising atraveler on the end of the blade-holder, a plateengaging and alfording a track for said traveler and being pivotallyconnected with said box and a coiled spring within said box acting toyiel 1y press said plate against said traveler in its positions, saidplate being adapted on the movement of said frame to reverse thetraveler and thereby the Abladeholder and blade.

9. A razor-blade Sharpener of the character described comprising anopen-top box, a

pair of cylindrical sharpening rolls therein exposed at the open top ofsaid box and geared together to have' reverse rotary motion, a framepivotally mounted on said box and near one side thereof and comprisingside arms and ,a connecting hand-piece whereb the free end of the framemay be manua y pressed toward said rolls, a blade- A'holder rotatablymounted in Said frame and movable therewith and adapted to detachablyhold a blade to be pressedA against said rolls and sharpened thereby, aspring actingto move said frame to its upper position above and fromsaid rolls, and blade reversin'g means engaging the blade holder for, onthe movement ofv said frame, reversing the said blade-holder and bladeand comprising a traveler, on the end of the blade-holder an a pivotedsprin -pressed plate engaging said traveler and a Ording a tracktherefor and adapted onthe movement of said frame to reverse thetraveler and thereby the bladeholder and blade, and said plate alsohaving at its upperend a right` angle member againstwhich said followermay be turned on manually positioning the blade-holder to receive orrelease a blade.

10. A razor-blade Sharpener of the character described comprising anopen-topebox, a pair of cylindrical sharpening rolls t rein exposed atthe open top thereof and geared together to have reverse rotary motion,a frame pivotally mounted on said box and near one side thereof andcomprising side arms and a connecting hand-piece whereby the free end ofthe frame may be manuall pressed toward SaidV rolls, a blade-hol errotatably mounted in said frame and movablen therewith and adapted todetachabl hold a blade to be pressed against said ro stand sharpenedthereby,.a spring acting to move said frame to its upper position aboveand from said rolls, and blade reversing means engaging the blade holderfor, on the movement of said frame, reversing the said blade-holder andblade and comprising a traveler 0n the end of the blade-holder, a -plateengaging andalording a track for said traveler and being pivotallyconnected with said box and a coiled spring within said box acting toyieldingly press said plate against said traveler 1n all its positions,said plate being disposed at one side of said box and adapted on themovement of said frame in one direction to reverse the traveler andthereby the blade-holder and blade, and said Sharpener having at theopposite side of said box a 20 SAMUEL KAN NER.

Witnesses: J. R. Fm'rn,

Cms. C. GILL.

